code: def test_zero_padding_1d_with_dynamic_spatial_dim(self):
      input_layer = layers.Input(batch_shape=(1, None, 3))
      padded = layers.ZeroPadding1D((1, 2))(input_layer)
      self.assertEqual(padded.shape, (1, None, 3))
  
file_path: keras/keras/layers/reshaping/zero_padding1d_test.py
imports: import numpy
  from absl.testing import parameterized
  from keras import layers
  from keras import testing
label_desc: Use image node_id 3 for calling the ZeroPadding1DTest obj's underlying member method code with example usage: obj.test_zero_padding_1d_with_dynamic_spatial_dim() without return types